The phrasing is cliché, but I mainly agree with the sentiment. My mum died at 61, but had had cancer on and off since her 40s, she got on and did things she wanted to do as she didn't know how long she had.
I now with in palliative care and see far too many people who wait until retirement to do start they've always wanted and then get ill just as they retire, (and too many who get ill and die eat before then).
It's not to say be irresponsible and don't plan at all for the future, but don't put off things that are important